/* Copyright (C) 2013-2021 TU Dortmund
 * This file is part of LearnLib, http://www.learnlib.de/.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package de.learnlib.api.oracle;

import net.automatalib.commons.util.Pair;
import net.automatalib.words.Word;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * Answers {@link de.learnlib.api.query.OmegaQuery}s.
 *
 * @author Jeroen Meijer
 * @see OmegaMembershipOracle
 * @see QueryAnswerer
 */
public interface OmegaQueryAnswerer<S, I, D> {

    Pair<@Nullable D, Integer> answerQuery(Word<I> prefix, Word<I> loop, int repeat);

    OmegaMembershipOracle<S, I, D> asOracle();
}
